docs: def read_pid_stat(pid="self"):
      """
      Returns system process stat information.
  
      :param pid: The process ID.
      :returns: The system stat information.
      :rtype: dict
      """
      with open("/proc/%s/stat" % (pid,), "rb") as f:
          stat = f.readline().split()
      return {
          "utime": int(stat[13]),
          "stime": int(stat[14]),
          "cutime": int(stat[15]),
          "cstime": int(stat[16]),
      }